所標尺寸為處理前的
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0 Z/ n0 g: E( V3 X4 r3 O美國MIL-C-5541標準 (Chemical conversion coating on Aluminium and their alloy)。4 ^* V7 J) `8 s; Z4 V
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MIL-C-81706標準(Chemical conversion material for coating Aluminium & Aluminium alloy) etc. Chem-film (Alodine.)
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ASTM B-449 也有部份関係。
( t" ]7 Z% f$ _9 k3 e1)化學導電氧化與alodyne是相同的處理辦法。alodyne也有其導電性能。+ J, O. {0 q: c. f
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Chemical Films(化成皮膜)
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Coatings for aluminum. Color can vary from colorless to golden - iridescent - brown. Materials should conform to Mil - C - 81706. Coatings shall be continuous free from powdery areas, breaks, scratches, etc.
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; g1 n9 k: I4 P, MMIL-C-5541E No dimensional change 。Normally yellow. Specify CLEAR if needed.
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Class 1 A
2 b8 E8 k% y$ ZClass 1A is used as a corrosion preventative film (unpainted) or to improve adhesion of paint finish systems.For maximum protection against corrosion for surfaces to be painted or left unpainted.
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3 _8 E! k+ e+ K& H( k( }Class 3
1 F9 I- S4 h9 j+ S0 w! {2 z$ xClass 3 is used as a corrosion preventive film for electrical and electronic applications, where low resistance contacts are required.(MAX CONDUCTIVITY)。 |